Sierra Exhaust Manifold — Dry Joint — 47-1842
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You have 30 days to request a return. All sale items are final sale.
Sierra Exhaust Manifold — Dry Joint — 47-1842
is a premium cast-iron replacement manifold designed specifically for MerCruiser GM V6 (262 cid / 4.3L) marine engines manufactured in 2002 and newer Replace a cracked, corroded, or leaking exhaust manifold with a direct-fit Sierra unit. The Sierra 47-1842 is a dry joint exhaust manifold built to OEM specifications — painted for corrosion protection, leak tested before packaging, and ready to install. At approximately 34 lbs, this is a substantial cast component engineered for long-term reliability in the marine exhaust environment.
Key Features
- Dry joint design — no water injection into the exhaust stream at the manifold
- Painted finish for corrosion resistance
- Leak tested prior to packaging for quality assurance
- Built to OEM fit and performance specifications
Compatibility
Fits select inboard and sterndrive engine applications. Verify fitment using your engine model, serial number, and year before ordering — exhaust manifold fitment is highly engine-specific.
Parts Desk Insights
Best use case: Dry joint exhaust manifolds are typically found on inboard and sterndrive engines where the exhaust and cooling water are separated at the manifold — as opposed to wet joint (water-injected) designs. This style is common on older MerCruiser and similar inboard applications. Manifold replacement is often triggered by external rust-through, internal cracking from freeze damage, or exhaust leaks at the riser connection. When replacing the manifold, it is best practice to replace the exhaust riser and gaskets at the same time to avoid a repeat job. At ~15.4 kg, this item may require freight shipping depending on your location — contact us before ordering if you need a shipping quote.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.